314
FZUS63 KMKX 152031
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
231 PM CST Sat Nov 15 2025

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan.

Waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.SYNOPSIS...

Brisk northwest winds are expected to continue into Sunday. Wind
gusts around 30 knots are expected during this period, with a few
gale force gusts possible in the northern third of the open
waters, as well as along the eastern lakeshore areas. Still do not
have high enough confidence for gusts exceeding gale force for
extended period, thus will continue to hold off on gale headlines
at this time.

Winds begin to ease Sunday night through Monday, as high pressure
around 30.1 inches builds into the Upper Midwest. Another low
pressure system around 29.8 inches is expected to track from the
Central Plains to south of Lake Michigan through the middle of
next week. This may result in increasing easterly winds.

LMZ261-362-364-563-160430-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
231 PM CST Sat Nov 15 2025

STURGEON BAY WI TO POINT BETSIE MI NORTH...

.TONIGHT...Northwest winds to 30 kt. A few gusts to 35 kt. Slight
chance of snow showers overnight. Waves 6 to 9 ft occasionally to
12 ft.
.SUNDAY...Northwest winds to 30 kt. A few gusts to 35 kt. Chance
of snow showers. Waves 6 to 9 ft occasionally to 12 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt. Chance of snow showers
in the evening. Waves 5 to 8 ft occasionally to 10 ft subsiding
to 4 to 6 ft occasionally to 8 ft.
.MONDAY...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 3 to 5 ft subsiding to 2 to 4 ft.
.MONDAY NIGHT...Northwest winds 10 to 20 kt diminishing to 5 to
10 kt overnight. Waves 1 to 3 ft subsiding to 1 to 2 ft.
.TUESDAY...North winds 10 to 15 kt. Waves 1 ft or less.
.TUESDAY NIGHT...Northeast winds 5 to 10 kt. Waves 1 ft or less.
.WEDNESDAY...East winds 10 to 15 kt becoming south. Waves 1 ft or
less.
.THURSDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.

$$

LMZ366-565-567-868-160430-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
231 PM CST Sat Nov 15 2025

STURGEON BAY WI TO POINT BETSIE MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...

.TONIGHT...Northwest winds to 30 kt. Waves 6 to 9 ft occasionally
to 12 ft.
.SUNDAY...Northwest winds to 30 kt. Waves 6 to 9 ft occasionally
to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft.
.SUNDAY NIGHT...Northwest winds 15 to 25 kt. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.MONDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft subsiding
to 2 to 4 ft.
.MONDAY NIGHT...Northwest winds 5 to 10 kt becoming west. Waves
1 to 2 ft.
.TUESDAY...East winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of rain. Waves 2 to 4 ft.
.TUESDAY NIGHT...East winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 3 ft.
.WEDNESDAY...East winds 5 to 10 kt becoming southeast. Waves 1 to
2 ft.
.THURSDAY...South winds 10 to 15 kt becoming southeast 10 to
20 kt. Chance of rain. Waves 1 to 2 ft building to 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-160430-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
231 PM CST Sat Nov 15 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Northwest winds to 30 kt. Waves 4 to 6 ft occasionally
to 8 ft building to 7 to 10 ft occasionally to 13 ft.
.SUNDAY...Northwest winds to 30 kt. Waves 7 to 10 ft occasionally
to 13 ft subsiding to 6 to 9 ft occasionally to 12 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to
25 kt. Waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to
9 ft occasionally to 12 ft.
.MONDAY...Northwest winds 10 to 20 kt. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft.
.MONDAY NIGHT...East winds 5 to 10 kt becoming southeast 10 to
20 kt overnight. Chance of rain. Waves 1 to 3 ft.
.TUESDAY...Southeast winds 10 to 20 kt becoming east. Rain
likely. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...East winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.WEDNESDAY...East winds 10 to 15 kt. Waves 2 to 4 ft.
.THURSDAY...Southeast winds 10 to 20 kt. Chance of rain. Waves
1 to 3 ft building to 2 to 4 ft.

$$

LMZ761-160430-
MAFOR 1523/
MICHIGAN NORTH 12740 12740 12747 12740. Waves 5 to 8 feet
building to 5 to 9 feet tonight. Waves 5 to 8 feet Sunday.

MICHIGAN SOUTH 11730 14740 11740 12730. Waves 3 to 6 feet
building to 7 to 10 feet tonight. Waves 6 to 10 feet subsiding to
4 to 7 feet Sunday.

$$
Wood

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes